If you are uploading listings via SalesPartner in REAXML format, here's how you remove sold and withdrawn listings.
Unlike other feeds such as Realestate.co.nz where if you do not select a listing, it is withdrawn automatically, for REAXML you need to include recent sold & withdrawn listings in your selection to process those status changes.
SalesPartner has a special Gallery option to make this easier: The ASW (Available, Sold, Withdrawn) filter.
Enable ASW to display recently sold / withdrawn listings.
Using the Status column, find and select sold / withdrawn listings. Upload these listings to your REAXML website normally.
Note: For REAXML you can upload individual or selections of listings (for example,only listings which have changed). You don't need to select and upload all available listings every time.